The weather pattern later this week will produce a significant temperature contrast from west to east. The jet stream will collapse across the Midwest and allow a shot of September-like air into the Midwest and Great Lakes.
In the West, the core of the heat relative to normal will be centered along the Pacific Northwest, especially from Seattle, Wash., to Medford, Ore.
The map below shows the timing and track of the strong cold front charging south and east this week.
Updated ECMWF weekly long-range output that goes into the second week of September...
Heavy rain will continue into Friday across the western Prairies with snow in the higher elevations.
We have potential severe weather in the East this evening and the potential for heavy rainfall Thursday and Friday for parts of Alberta.
Potential for strong thunderstorms again Wednesday.
The Accuweather.com summer forecast for Canada.
Rainy period for the northern Plains and parts of Manitoba and Ontario this weekend and early next week....
The Spring of 2013 so far has been off to a much different start across Canada compared to last year's Spring.